✅ Add test and snapshot for TravelTimer.

src/__tests__/components/TravelTimer.test.js

@@ -0,0 +1,25 @@
+import { customRender } from '../../test-utils'
+import TravelTimer from '../../components/TravelTimer'
+import { defaultState } from '../../fixtures'
+
+const customState = {
+  ...defaultState,
+  ship: {
+    ...defaultState.ship,
+    destination: {
+      name: 'Test Planet 2',
+      value: 50
+    },
+    isShipTraveling: true
+  }
+}
+
+describe('<TravelTimer />', () => {
+  it('Should render the <TravelTimer /> component.', () => {
+    const container = customRender({
+      component: TravelTimer,
+      state: customState
+    })
+    expect(container.asFragment()).toMatchSnapshot()
+  })
+})

src/__tests__/components/__snapshots__/TravelTimer.test.js.snap

@@ -0,0 +1,18 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<TravelTimer /> Should render the <TravelTimer /> component. 1`] = `
+<DocumentFragment>
+  <div
+    class="StyledBox-sc-13pk1d4-0 IRSNj"
+  >
+    <h3
+      class="StyledHeading-sc-1rdh4aw-0 ftOecI"
+    >
+      Travel Timer
+    </h3>
+    <span>
+      8 minutes 20 seconds
+    </span>
+  </div>
+</DocumentFragment>
+`;